BEAMCAT: data selection and download

Catalog parameters

Select the parameters you would like to download from the catalogs.

JPL parameters HITRAN parameters

Selection criteria

You can narrow your search in the BEAMCAT data base by specifying selection parameters in the following form. Please note that all selected values are in effect. That means that you will end up with an empty data file if you specify selections that exclude each other like HITRAN molecule numbers and JPL tags from different molecules or non-overlapping frequency/wavenumber ranges.

Molecule types and isotopes

Limit your request to certain JPL tags or HITRAN molecules and isotopes. It is usually enough to enter either JPL tags or HITRAN molecules and isotopes. If you enter both, only transitions matching both criteria will be selected. If you enter nothing, all species will be considered:

JPL Tag HITRAN Molecule HITRAN Isotope

Frequency window

Limit your request to a frequency or wavenumber range. It is usually enough to enter either JPL frequencies or HITRAN wave numbers. If you enter both, only transitions in the overlap of both ranges will be selected. If you enter nothing, all frequencies will be considered:

JPL frequency range HITRAN wavenumber range
to MHz to 1/cm

Output file options

The data file will be generated and downloaded directly through your browser as soon as you select the "Download data" button. Be aware that the data files can become quite large and may take a long time to download.

Output file format:

Maximum number of returned entries:

Note: The simple web interface will only download lines that have been identified in both catalogs.